1girl, arms behind back, bare shoulders, black hair, blue eyes, blue hair, blush, breasts, bulge, erection, erection under clothes, futanari, leotard, long hair, lying, multicolored hair, on side, original, paid reward available, school uniform, serafuku, shiro maru, side ponytail, small breasts, solo, two-tone hair, white background, wizard (shiro maru)